Buggy code:
public class TryStatement extends Statement { public Block tryBlock ; public Block [ ] catchBlocks ; public Argument [ ] catchArguments ; public Block finallyBlock ; BlockScope scope ; public boolean subRoutineCannotReturn = true ; ReferenceBinding [ ] caughtExceptionTypes ; boolean tryBlockExit ; boolean [ ] catchExits ; public int [ ] preserveExceptionHandler ; Label subRoutineStartLabel ; public LocalVariableBinding anyExceptionVariable ; public LocalVariableBinding returnAddressVariable ; public LocalVariableBinding secretReturnValue ; public static final char [ ] SecretReturnName = "<seq2seq4repair_space>returnAddress" . toCharArray ( ) ; public static final char [ ] SecretAnyHandlerName = "<seq2seq4repair_space>anyExceptionHandler" . toCharArray ( ) ; public static final char [ ] SecretLocalDeclarationName = "<seq2seq4repair_space>returnValue" . toCharArray ( ) ; int preTryInitStateIndex = - 1 ; int mergedInitStateIndex = - 1 ; public FlowInfo analyseCode ( BlockScope currentScope , FlowContext flowContext , FlowInfo flowInfo ) { preTryInitStateIndex = currentScope . methodScope ( ) . recordInitializationStates ( flowInfo ) ; if ( ( anyExceptionVariable ) != null ) { anyExceptionVariable . useFlag = LocalVariableBinding . USED ; } if ( ( returnAddressVariable ) != null ) { returnAddressVariable . useFlag = LocalVariableBinding . USED ; } InsideSubRoutineFlowContext insideSubContext ; FinallyFlowContext finallyContext ; UnconditionalFlowInfo subInfo ; if ( ( subRoutineStartLabel ) == null ) { insideSubContext = null ; finallyContext = null ; subInfo = null ; } else { insideSubContext = new InsideSubRoutineFlowContext ( flowContext , this ) ; subInfo = finallyBlock . analyseCode ( currentScope , ( finallyContext = new FinallyFlowContext ( flowContext , finallyBlock ) ) , flowInfo . copy ( ) ) . unconditionalInits ( ) ; if ( subInfo . isReachable ( ) ) { subRoutineCannotReturn = false ; } } ExceptionHandlingFlowContext handlingContext = new ExceptionHandlingFlowContext ( ( insideSubContext == null ? flowContext : insideSubContext ) , tryBlock , caughtExceptionTypes , scope , flowInfo . unconditionalInits ( ) ) ; FlowInfo tryInfo ; if ( ( tryBlock . statements ) == null ) { tryInfo = flowInfo ; tryBlockExit = false ; } else { tryInfo = tryBlock . analyseCode ( currentScope , handlingContext , flowInfo . copy ( ) ) ; tryBlockExit = ! ( tryInfo . isReachable ( ) ) ; } handlingContext . complainIfUnusedExceptionHandlers ( catchBlocks , scope , this ) ; if ( ( catchArguments ) != null ) { int catchCount ; catchExits = new boolean [ catchCount = catchBlocks . length ] ; for ( int i = 0 ; i < catchCount ; i ++ ) { FlowInfo catchInfo = flowInfo . copy ( ) . unconditionalInits ( ) . addPotentialInitializationsFrom ( handlingContext . initsOnException ( caughtExceptionTypes [ i ] ) . unconditionalInits ( ) ) . addPotentialInitializationsFrom ( tryInfo . unconditionalInits ( ) ) . addPotentialInitializationsFrom ( handlingContext . initsOnReturn ) ; catchInfo . markAsDefinitelyAssigned ( catchArguments [ i ] . binding ) ; if ( ( tryBlock . statements ) == null ) { <START_BUG> catchInfo . setReachMode ( FAKE_REACHABLE ) ; <END_BUG> } catchInfo = catchBlocks [ i ] . analyseCode ( currentScope , ( insideSubContext == null ? flowContext : insideSubContext ) , catchInfo ) ; catchExits [ i ] = ! ( catchInfo . isReachable ( ) ) ; tryInfo = tryInfo . mergedWith ( catchInfo . unconditionalInits ( ) ) ; } } if ( ( subRoutineStartLabel ) == null ) { mergedInitStateIndex = currentScope . methodScope ( ) . recordInitializationStates ( tryInfo ) ; return tryInfo ; } tryInfo . addPotentialInitializationsFrom ( insideSubContext . initsOnReturn ) ; finallyContext . complainOnRedundantFinalAssignments ( tryInfo , currentScope ) ; if ( subInfo == ( FlowInfo . DEAD_END ) ) { mergedInitStateIndex = currentScope . methodScope ( ) . recordInitializationStates ( subInfo ) ; return subInfo ; } else { FlowInfo mergedInfo = tryInfo . addInitializationsFrom ( subInfo ) ; mergedInitStateIndex = currentScope . methodScope ( ) . recordInitializationStates ( mergedInfo ) ; return mergedInfo ; } } public boolean cannotReturn ( ) { } public void generateCode ( BlockScope currentScope , CodeStream codeStream ) { } public void resetStateForCodeGeneration ( ) { } public void resolve ( BlockScope upperScope ) { } public String toString ( int tab ) { } public void traverse ( IAbstractSyntaxTreeVisitor visitor , BlockScope blockScope ) { } }

Fix:
catchInfo . setReachMode ( FlowInfo . UNREACHABLE ) ;